password.cpp

atm模拟程序

#include"stdio.h"
#include"stdlib.h"
void main()
{
	FILE *fp;
	char ch;
	if((fp=fopen("password","w"))==NULL)
	{
		printf("不能打开文件\n");
		exit(0);
	}
	do
	{
		ch=getchar();
		fputc(ch,fp);
		putchar(ch);
	}while(ch!='\n');
		putchar(10);
	fclose(fp);
}